Refillable cartridge-fuse.



G. W. GUODRIDGE. REFILLABLE CARTRIDGE FUSE. APPLICATION FILED Nov. 25. 1914.

I Patented Apr. 11,1916.

, $1 wan/" each side of the bridge UNITED STATES PATENT oEErcE.

GILBERT W. GOODRIDGE, OF BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE BRYANT ELECTRIC COMPANY, OF BRIDGEPORT, CONNECTICUT. A CORPORATION OF CON- NECTICU'I'.

Specification of Letters Patent.

Patented Apr. 11. 1916.

Application filed November 25, 1914. Serial No. 873,932.

To all whom it may concern Be it knownthat I, GILBERT W. Goon- RIDGE, a citizen of the United States of America, and residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented a certain new and useful Improvement in Refillable Cartrid e- F uses, of which the following is a'specification. 4

My invention relates to refillable cartridge fuses and the object of my invention is to provide a device of this character which is economical to manufacture and efficient in service.

In the accompanying drawing, Figure 1 is a longitudinal section through a cartridge fuse in which my invention is embodied in one form; Fig. 2 is a similar View at right angles to Fig. 1; Fig. 3 is a plan of the fuse blank; Fig. 4 is a perspective of one of the bridge pieces; and Fig. 5 is a perspective of one of the caps.

As here shown, the present fuse comprises a cylindrical casing or shell 10 of insulating material such as paper or fiber. Within each end of the shell, I arrange a transverse bridge piece or strap 11 which is rigidly secured in any suitable manner, as by the rivet 12, and preferably in such position that its outer face is substantially flush with the end of the shell 10. Spaces 13 on piece permit the end 14 of the fuse 15 to be passed beyond the bridge piece and angled across the outer face of the latter. A. slot 16 is preferably formed in the end of the fuse to register with the threaded hole 17 in the bridge piece. Aclosure cap 18 spun or struck from sheet metal, fits over the end of the shell'and its end diaphragm 19 is perforated at 20 in register with the hole 17 in the bridge piece,

both holes 17 and 20 being preferably axial to the fuse; .Vent holes 21 may also be formed in the. diaphragm. The screw 22 passes through the hole 20 in'the cap diaphragm and threads into the hole 17 in the bridge piece, thus not only securing the cap in position, but also firmly clamping the fuse end between the cap diaphragm and the bridge piece.

The central portion of the diaphragm 19, to approximately the internal diameter of the shell 10, is preferably inwardly offset so that it may enter Within the shell in case the bridge piece is not flush with the end of the latter (see left hand and Fig. 1). In this case the end of the shell enters the channel 23 thus afforded for its reception.

The assembly of the device is obvious. The caps 18 being removed from each end of the shell, the fuse 15 is inserted through the spaces 13 to the sides of the bridge pieces and the ends 14 angled over the latter, so that the slots 16, if used register with the threaded holes 17 in the bridge pieces. The fuse may be passed through spaces on the same side of the bridge pieces or on opposite sides as shown. The caps justed and the screws 22 inserted and tightened thus clamping the caps against the fuse ends and establishing electrical connection between the same. The caps serve as fuse terminals in-well known manner.

I claim as my invention 1. A refillable cartridge fuse having a shell of insulating material, a U-shaped transverse bridge piece, fitting Within one end of said shell and riveted permanently thereto, a cap fitting freely over the end of the shell and provided with a perforated closure diaphragm, a fuse extending longitudinally within the shell and having an end bent over the outer end of the bridge piece and a clamping screw passing through the cap diaphragm and threaded into the bridge piece and serving not only to hold. the cap'in position but also to clamp the bent over end of the fuse between the cap diaphragm and bridge piece, substantially as described.

A refillable cartridge fuse having a shell of insulating material, a transverse bridge piece fitting within one'eud of said shell and riveted permanently thereto, said bridge piece being tapped on the axis of the shell, a cap fitting freely over the end of the shell and provided with a closure diaphragm apertured in line With the tap in said bridge piece, a fuse extending longitudinally within the shell and outer end of the bridge piece anda clamping screwpassing through the cap diaphragm and threading into the tap in the bridge piece and serving not only to hold the cap in positionbut also to clamp the bent-over end of the fuse between the cap diaphragm and bridge piece, substantially as described. 1

3. A refillable cartridge fuse having a shell of insulating material, a transverse 18 are then read-- 10 piece and apertnred in register with the tap in the latter and a elainping screw passing through the cup diaphragm and aperture in the fuse end and threading into the/tap in bridge pieee and sewing not only to hold the on in position but also liO clamp the bent ever end of the fuse bet 'een the cup diaphragm and bridge piece, substantially as described.

In testimony whereof I have signed niy nznne to this speeifieation in the presence of two subscribing witnesses.

GILBERT \V. GOODRHXITE.

"itnesses H. M. lVICHnn'r, A. H. Joxizs.

Copies, of this patent may be obtained for five cents each, by addressing the Commissioner of Eatents, Washington, D. 0. 

